US1537389A - Wireworking machine - Google Patents

Description

May 12, 1925. 1,537,389 B. L. VAN ORMAN WIREWORKING MACHINE Filed M arch 15, 1924 '7 Sheets-Sheet 1 May 12, 1925.

B. L. VAN ORMAN WIREWORKING MACHINE Filed March 13, 1924 '7 Sheets-Sheet 2 www.

May 12, 1925.

B. L. VAN ORMAN WIREWORKING MACHINE Filed March 13, 1924 '7 Shetssheet 3 O GNN. NNN bhw.

hmm.

May 12,l 1925. 1,537,389

B. L.. VAN ORMAN WIREWORKING MACHINE:l

Filed March 15. 1924 '7 Sheets-.Sheet 4 i INVENTOR 5er?`L A. Vanr/mn ATTORNEYS May 12,1925.

B. L. VAN RMAN WIREWORKING MACHINE Filed March 13, 1924 '7 Sheets-Sheet 5 May 12,l 1925.

B. L. VAN ORMAN WIREWORKING MACHINE '7 Shets-Sheet 6 Filed March 13. 1924 INVENTOR Sirf L. l/anrman 6 a? ffm 921W? ATTORNEYS May 12, 1925. 1,537,3 89f v B. L. VAN ORMAN wIREwoRxme MACHINE Filed March 13, 1924 l '7 sheets-s116111 7' Patented May 12, 1925.

UNITED STATES 1,537,389 .PATENT OFFICE.

BERT L. VAN ORMAN, OF DETROIT, MICIGAN, ASSIGNOR TO L. A. YOUNG INDUSTRIES, INC., OF DETROIT, MICHIGAN.

WIREWORKING MACHINE.

Application filed March 13, 1924.

T all whom t may concern.'

Be it known that I, BERT L. VAN ORMAN, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented certain new and useful Improvements in l/Vireworking Machines, of which the following is a specification.

This invention relates to improvements in wire working machines.

In the use of coiled tension springs, it is necessary that means be provided for fastening the ends of the spring to the machine parts which are to be actuated by t-he spring. A common method is to form a suitable eye or hook at each end from a portion of the spring wire which must be provided for in ceiling the spring by leaving uncoiled stock which is a disadvantage in the ceiling operations or the spring must be partially uncoiled.

This invention relates to a machine for uncoiling or straightening a portion of the coils of a coiled spring. One of the main objects being to providel a.. machine capable of accomplishing this result with a minimum amount of manual assistance.

A seco-nd object is to provide means of readily adjusting the machine to springs of different size, and for straightening dierent lengths of wire.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the obje-cts of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invent-ion is clearly illustrated in the accompanying drawing, forming a part of this application, in which:

Fig. I, Sheet l, is a fragmentary view in perspective of a machine embodying the features of my invention.

Fig. II, Sheet 2, is a partial plan view thereof.

Fig. III, Sheet 3, is a fragmentary View in elevation taken from the front of Fig. II.

Fig. IV, Sheet 4, is an enlarged detail view in section on a line corresponding to line 4-4 of Fig. II.

Fig. V, Sheet 5, is enlarged fragmentary detail view in section' on aline' corresponding to line 5-5 of Fig. III. ,y

Fig: VI, Sheet 6, is an enlarged detail Serial Ne. 698,873.

view in section on a line corresponding to line 6 6 of Fig. III.

Fig. VII, Sheet 2, is an enlarged fragmentary view in section on aline corresponding to line 7-7 of Fig. II, illustrating detail-s of a spring turntable or conveyor.

Fig. VIII, Sheet 6, is an enlarged detail view in section on a line corresponding to line 8-8 of Fig. VI, illustrating details of a spring turntable or conveyor actuating lever.

Fig. IX, Sheet 6, is an enlarged detail view in section on al line corresponding to line 9-9 of Fig. VI, showing further spring turntable or conveyor details.

Fig. X, Sheet 6, is a detail view in section on a line corresponding to line 10-10 of Fig. IX.

Fig. XI, Sheet 3, is an enlarged view in section on a line corresponding to line Il ll of Fig. V, illustrating details of a spring conveyor brake.

XII. Sheet 7, is an enlarged detail view in section on a line corresponding to line 12-12 of Fig. V, showing the wire pulling mechanism engaging the lower coil of a spring.

Fig. XIII, Sheet 7, is a detail view in elevation of a spring holder pin with a coil spring in elevated position thereon.

Fig. XIV, Sheet' 3, is a detail enlarged View in section on a line corresponding to line 14-14 of Fig. III, illustrating details of a spring retainer.

Fig. XV, Sheet 3, is a` detail View in section on a :line corresponding to line 15-15 of F ig. III, showing further spring retainer details.

Fig. XVI, Sheet 4, is a detail view in section on a line corresponding to line 16-16 of Fig. IV, illustrating details of the wire puller slide.

Fig. XVII, Sheet 4, is a detail view in section on ya line corresponding to line 17-17 of IIV, illustrating details of a wire puller slide brake. 4

Fig. XVIII, Sheet 4, isa detail View in section on a line corresponding to line 18-18 of Fig. IV, illustrating details of a wire puller control member.- Fig. XIX, Sheet 6, is an enlarged detail view in section on a linev corresponding to` line 19e-'19l of Fig.- II, illustrating wire puller' drivin-ganci contini details. Fig. XX, Sheet 7,- is a View similar to Fig. XII, showing the parts in actuated position.

Fig. XXI, Sheet 2, is a. View in section on a line corresponding to line 21-21 of Fig. XX, showing further det-ails of the wire puller or straightener.

Fig. XXII, Sheet- 4, is a view in section on a line corresponding to line 22-22 of Fig. VI, illustrating details 'of an adjustable cam member.

Fig. XXIII, Sheet ,Yi's an enlarged view in section on a line corresponding to line 234-23 of Fig. V, showing details ot wire cut-otl1 inechanisifn. 4

In the drawing, similar reference characters refer to similar parts throughout the several views, the sectional views being taken looking in the direction indicated by the little arrows at the ends of the section lines.

The machine is driven by any suitable ineans as the belt 24 and pulley 25, the latter being carriedby a. shaft 25k which also 'carries a worni 26 engaging a worni wheel 27-see Figs. I, II, III and IV.A Theworin wheel 27 is secured to a vertical shaft 28 which imparts iiioti'on to various mechanisms of the machinesee Fig. IV.

The work, the coiled spring 30, is successivelyinoved to the different positions for the several operations by a turntable or conveyor 31 rotatable on a post 32 which is secure/d to the inain ltraine S3-see Figs. I.v

II, III and V. The turntable is interinittently rotated by a ratchet lever 34 which is pivoted on the post 32 and which carries pawl 35 engaging teeth 36 in 'an annular rack 29 on the under side of the turntablesee Figs. VII to Xy inclusive.

As a preferred torni ot construction, the pawl 85 is contained in a recess 37 and yieldingly supported by a spring` 88, the shank 35 ot the pawl being squared to prevent the pawl i'roin rotating outot correct position-see Figs. IX and X. The ratchet lever 84 is connected by an adjustable link 89 to a cani lever 40 which is pivoted at 4l and engaged by a cani 42 on the shaft 28. The lever 40 is held in contact with the cani 42 by a spring 43 which is supported by a reciprocatable spring keeper 44-see Figs. III and IV. j

The turntable 3l is advanced one step with each revolution of the shaft 28 and between movements is held in correct position by a pivoted locking dog 'or detent 45 which successively engages lnotches 46V in a `flange 47 'of the table l-see Figs. III and VII. Y The d'etent is pivoted at 48 and con: nected by an adjustable link 49 to a bell crank I50 which carries a roller 5l engaged by Ya cain 52 on the shaft 28see Fig. IV. The roller is yieldingly held in contact 'with the c aIn by a spring 53 bearing against one end of the detent 45. fr brake 54 bearing against the lower surface of the turntable otterssuflicient resistance to n'iovenient ot the table to prevent its overrunning the desired position-see Figs. III and V. This brake is yieldingly held in contact vwith the table 3l by a spring 55 contained in the cylindrical upright supporting ineinber 5- see Fig. XI.

The turntable 3l carries a series or' equally spaced spring holder pins 57; The operator places a coiled spring 30 upon one ot the pins when the latter is in the position 57u-4 see Fig. V. The next nioveinent ot the turntable carries the Vspring to the position 57". A wire gripper 59 now advances towardthe spring 3() and the hooked pivoted jaw 60A of the v"gripper passes underneath the lower coil of the spring-see Fig. 'XII Each of the pins 57 has a longitudinal groove' 6I registering with a notch 62 in the periphery of the' work table or conveyor 8l to provide clearance ttor entrance of the jaw (il). As a preferred nieans ot securing the work holding pins 57 to the table, each'pin terminates in an offset screwl threaded extension 6301i which is threaded a nut 64, the latter having a spool or spacer portion toallow clearance for the jaw 60. A segmental flange 66 on the pin provides a seat on lwhich the spring 30 rests-see Fig. XIV, the end o1nA the `flangeV providingl 'a stop 67-se`e Fig. XIII-against which the 'end 68 otth'e bottoni coil of the spring is placed by the operator to insure correct positioning of the spring on the pin and engagement of the jaws of the gripper 59 at the correct point ci the bottoni spring coil.

IVhen in position 57h, the spring 30 is yieldingly retained in place on the pin 57 by a plate 7() under which the spring 8O passes as it inov'e's to this p'olsitions'ee Figs. I, III and The plate 70 is supported by an arin 7l on a standard 72 which is vertically adjustable in the sleeve-like bracket 7? to chanoe the height of the plate 70 tor springs of different lengths-#see Fig. XV. The plate 70 is hinged to a bracket 74 on the arm 7l and urged downward by a spring 75, an adjustable stop 7 6 supporting the plate 7 O when the latter is not in engagement with one oit the springs 30. As therjaw passes underneath the spring 80, the latter is lifted slightly from its seat on the pin 57, the plate 7 O yielding to allow the spring to rise. INhen the gripper 59 has reached its Work engaging position, the plate 70 reseats the spring 30 on the pin 57 thereby placing the lower coil 77 ot the spring in range of the hook 78 on the jaw (iO-see Fig.

XII.

The gripper 59 is mounted on a carriage 8O reciprocable' in the channel 'ways 8l of the longitudinal guide Inenibers 82-"see Figs. IV and XVI. The gripper carriage 80 is actuated with aiintermittent movement which I will new describe.

A draw bar 83 is disposed longitudinallv ot the carriage and ins a lost motion c necticn thereto. the car therein engaged by the ting a limited relative ient these parts or a lost m tion connection, 'lhc actuating or driving member connected to this bar 8B by a et oined Yfriction and positive driving means, as will be described.

The carriage is provided with a brake or friction means to insure this lost i'notion action. A brake 86 is i'nounted upon the bracket Si' carried by the carriage. the brake coacting with a stationary arm disposed between the brake shoes 89 and 90 on the bracket 87. The desired amount oilE friction is provided by compression springs 91 carried by the spring keepers 92 having adjusting nuts 9f'3-see Figs. IV and XVII. The actuating member 95 is reciprocatingly mounted on the guide ways 82, the member 95 being connected to the crank pin 97 on the cam 88 by means ot the adjusting link or pitnian 98 see Figs. IV and VI.

For convenience in assembling` and to compensate for wear the ways S2 are adjustably supported by means of the adjusting screws 94.- and the clamping screws 96 engaging elongated bolt holes 82-see Fig. XVI.

'Ihe driving connection trom the actuating member to the carriage draw bar 83 whereby the constant movement ot the actuating member is changed into an intermittent movement for the carriage com prises a combined friction and positive driving or connectingr clutch 100. This clutch consists of a bar 99 on the actuating member. friction slice 101 rigidly secured to the bar S3 and underlying the bar 99 actuating the cross head and an upper shoe d which is vertically reciprocable on bolts 103 in the shoe 101 and yieldingly held against the top surface of the bar 99 by the springs 1041-. means being provided for regulating the tension of these springs.

The slices 101 and 102 are provided with liacings 105 of friction material which grip the bar 99 with suiiicient `friction to cause the carriage 83 to advance with the actuating member until the shoe 101 engages the stop 10G-see Figs. II and XIX. The stop 106 is moved into and out of range ot the shoe 101 by means of a cam lever 10iactuated by a cam 10S on the shaft 28,-see Fig. XIX. The roller 109 on the lever 107 is held yieldingly against the cam 98 by a spring 110. To prevent breakage of the parts the lever 107 is yieldingly held in engagement with its pivot 111 by the spring 112, the lever being provided with a notchlike opening 113 engaging the pivot 111,

thereby permitting the lever to swing away from its pivot in case the clutch 100 should become displaced or the parts should not be operated in proper order, thereby interrupting the normal movement ot the stop 10o-see Figs. II and XIX.

After the clutch shoe has engaged the stop 106 the actuating member 95 continues to advance the bar sliding through the control member until the clutch pawl 115 drops into the hole 116 in the bar 99. The actuation of the parts is timed so that at this instant the stop 106 is retracted allowing the carriage 83 to advance with the actuating member by which it is now positively driven. These parts continue to advance toe'ether until the gripper is in position to engage the lower coil of the spring 30.

The adjustment ofthe connecting rod 98 provides means for accurately determining this position and means for changing' the position for springs of different diameters.

The movable jaw of the gripper is pivotee at 11T- see Fig. XII, to the levers 18 on the gripper 59, this gripper having a lined jaw 119'adapted to coact with nthe pivotedjaw 60. In addition to its supporting pivot 117 the 50 is yieldingly suspended by a line 120 carried by the blade spring 121. The lower ends of the levers 118 are connected by a link 122 to the bar 83.

I'Vhen the actuating` member 95 advances on its forward stroke the bar 83 owing to' the lost motion connection to the carriage as described, swings the lever 118 forwardly opening the jaw 60. The carriage is then moved forwardly with the bar 83, the jaw being held Vopen until the end of the forward stroke is reached-see Figs. 'IV and XII. On the return stroke of the actuating cross head the bar 83 is actuated independently of the carriage through the lost motion connection described and this closes the jaw gripping the wire, the carriage being held in its forward position bythe brake S6. The carriage is then actuated.

As the gripper 59 moves away from the spring holder 5?' with the wire 69 in its grasp the spring is uncoiled, the uncoiled portion being pulled away from the spring, as shown in Figs. XX and XXI. As the wire is pulled out or the spring uncoiled the wire is drawn against the straightening pin 123 which removes the bends or straightens the wire, leaving the extended or pulled out portion straight with the eXception'of the hooked end portion 124 held by the gripper jaws.

The pin 28 is supported by a rod 125 which is longitudinally adjustable in the brackets 126 so that the position of the straightening pin may be adjusted for springs of different diameterswsee Figs. V and VI. The length or amount' of wire pulled 'from the coil is determined by the At substantially the same time that the Vmember 101 contacts or comes to rest against the stops 128, the payvl 115 is lifted by the cam portion 135 of the stop rod leaving only the frictional clutch connection for the actuating` member and the carriage so 'that the actuating member may complete its stroke Without further movement of the carriage and the ja-W is opened Jto-release the Work. rlhis also permits utilization of more or less of the stroke of the actuating member as may be required for the particular Work.

The .Wire is removed from the gripper by an ejector 136 carried by the rocker arm 137 pivoted at 13S-see Figs. II, V, VI and XII. This rocker arm is actuated by the cam arm 139 on the vertical shaft 140see Figs. XII and XIX. The shaft 140 is provided With an arm 141 connected by the adjustable link 142 to a bell crank lever 143 vvhich is in turn connected to the rocker arm 137 by the adjustable link 144. The ejector is returned to its initial position by Vthe spring 145. The cam arm 139 lies in the path of a cam member 146 carried by the cams 42 and 52, see Figs. IV, V and VI. o

In the structure illustrated the cam 146 is pivotally mounted on a pin 147 which eX- tends through the cams 42 and 52, see Fig. XXII. The pin provides means by which the cams 42 and 108 are driven from the cam 52, the latter only being directly secured to the shaft 28. The cam 146 may be turned on the pin 147 and rheld in itsv adjusted position by means of the screw 148, this adjustment providing .means for changing Vthe amount of movement of the ejector 136. The ejector is shown in its actuated position by dotted lines in Fig. XXI.

After the vvire b as been released or ejected from the gripper the Work table carries another spring into the position 57b and carries the partially uncoiled spring to the position 57c Where the hook or unstraightened end portion 124 is cut off. As the spring is carried from the position 57b the extending end 69 is drawn around the straightening pin 123 and swung back to the position shown in II. The spring neXt comes Vin contact With the end 149 of a positioning lever 150 Which is pivoted at 151 and yield- Yingly held against the stop pin 152 by a spring 153. The bracket 154 which carries the lever 150 is secured to the standard 155 by the screw 156. By loosening the screw the bracket may be rotated as desired to adjust the position of the lever relative to the Work table.` l c As the spring` is carried forward to position 57'c the end of the lever 149 is pushed ahead, the other end 157 of the lever is swung around to the position shown by dotted lines in Fig. V carrying lthe extending or unco-iled end of the spring around With it. When the Work has passed the end 149 of the lever, the spring 153 returns the lever to its initial position. After passing the positioning lever 150 the Work 30 engages the face of a spring rotating shoe 158 pivoted on the bracket 154 at 159 and yieldingly held toward the table by the spring 160, see Fig. V..

rIhe shoe 158 has a facing 161 of frictional material with which the spring engages causing the spring to rotate on its supporting pin, thereby swinging the extended end thereof into operative relation to the cut-olirz mechanism 162. rIhe stop 163 supports the member 158 in its initial position, see Fig. II.

The cut-off mechanism 162 consists of a bracket member 165 carrying the shear block 166. A cutter 167 is pivoted to the bracket 165 and carries the adjustable plate 168.V

The plate 168 is adjustably secured to the cutter by Vmeans of the set screw 170 and the adjusting screvv 169, see Figs.l I and XXIII. 'Ihe spring rotating shoe 158 swings the projecting or extended end 69 of the spring over the shear block and underneath the cutter. rI`he cutter'is actuated bythe lever 172 on the camy 108, see Fig. V, the cam lever engaging the roller 17 3 of a lever 174 on the rock shaft 175. The rock shaft has an arm 176 connected by the adjustable link 177 to the cutter.

When the cutter is'actuated by the mechanism described the blade moves downvvardly across the face of theshear block thereby cuttin off the hooked or unstraightened portion of the spring. rIhe roller'17f3 is held in contact with the cam 108 by means of the springs 187. rIhe supporting bracket for the cutter is slidably supported in the dove-tailed way 180 in the main'. frame 33 providing means for adjusting the position of the cut-off for leaving any desired length of Wire extending from the spring, the bracket being secured in its ad-V justed position by means of the set screw 181. 'Ihe arm 176 is splined to the rockshaft 175 so that itV may be moyed longitudinally thereon to aline with theadjustment of the cutter.

After the Wire has been cut off the Work is then carried to the ,posit-ion 57 l Where it is engaged by the spring ejector. A satisfactory type of ejector consists of the rotating brush 183 which is driven at a speed suflicient to lift theY spring from the pin throwing it against the detlector 184, see Figs. I, II and III. This defiector is adjustably supported on a bracket 185 and guides the spring to its receptacle. i

In the embodiment illustrated the ejector brush is driven by a belt 186 connecting the pulley 187 on the shaft 188 of the brush with the main pulley 25. The empty holder is carried by the next actuation of the work table to the position 57a, having iinished a complete cycle of movement of the Work table. The several operations, placing the spring upon a holder, uncoiling, vcutting od and ejecting, are carried on simultaneously on different springs. All of the mechanisms except the ejector 183 are driven by the shaft 28 so that the different parts are correctly timed and their timed relation is easily maintained.

I have illustrated and described an embodiment of my invention Which I have found very satisfactory. I have not attempted to illustrate or describe certain modifications and adaptations Which I contemplate as I believe the disclosure made Will enable those skilled in the art to embody or adapt my improvements as may be desired.

Having thus described my invention what I claim as nerf and desire to secure by Letters Patent is:

1. In a structure of the class described, the combination of a Work holder, a reciprocatingly mounted carriage provided With a fixed jaiv and a pivoted jaiv, a brake for 't .onally retarding the movement of said carriage, means for actuating said carriage and said jaiv comprising a draiv bar having a lost motion connection to said carriage and operatively connected to said pivoted j avv so that the aw is opened and closed by the independent movement of said draw bar at the ends of the stroke of the carriage, a reciprocating actuating member, a driving connection for said actuating member and draw bar comprising a clutch bar on said driving member having a hole therein, a friction shoe on said draw b ar coacting with said clutch bar providing a friction drive connection, a driving pawl on said dran7 bar adapted to engage said hole in said clutch bar providing a positive drive connection, a stop for hoiding said carriage on its forward stroke to permit engagement of said paivl, means for retracting said stop timed with the engageinent of said driving paivl, a cam for disengaging said driving paivl on the return stroke of the carriage, and an adjustable return stop for said carriage positioned to engage after said pavvl has been disengaged.

2. In a structure of the class describet, the combination of a Work holder, a reciprocatingly mounted carriage provided With a fixed jaw and a pivoted javv, means for actuating said carriage and said jaw comprising a draw bar having a lost motion connection to said carriage and operatively connected to said pivoted jaw so that the jaW is opened and closed by the independent movement of said draw bar at the ends of the stroke of the carriage, a reciprocating actuating member, a driving connection for said actuating member and draw bar comprising' a clutch bar on said drivingmember having a hole therein, a friction shoe on said draw bar coacting with said clutch bar providing a friction drive connection, a driving` pawl on said draw bar adapted to engage said hole in said clutch bar providing a positive drive connection, a stop for holding said carriage on its forward stroke to permit engagement of said paivl, means for retracting sait stop timed with the engagement of said driving pawl, a cam for disengaging said driving paivl on the return stroke of the carriage, and an adjustable return stop for said carriage positioned to engage after said paw] has been disengaged.

3. In a structure of the class described, the combination of a Work holder, a reciprocatingly mounted carriage provided with a Work engaging javv, a brake for frictionally retarding the movement of said carriage, means for actuatingsaid carriage and jan7 comprising a carriage draw bar having a lost motion connection to said carriage and an operative connection to said javv, a reciprocating actuating member, a combined friction and driving connection for said actuating member and draiv bar comprising a` clutch bar on said driving member having a hole therein, a friction shoe on said dravv bar coacting with said clutch bar providing a friction drive connection, a driving pawl on said draw bar adapted to engage said hole in said clutch bar providing a positive drive connection, a stop for holding said carriage on its forward stroke to permit engagement of said pawl, means for retracting said stop timed with the engagement of said driving paivl, a cam for disengaging said driving paivl on the return stroke of the carriage, and a return stop for said carriage positioned to engage after said pawl has been disengaged.

4t. In a structure of the class described, the combination of a Work holder, a reciprocatingly mounted carriage provided with a Work engaging jaw, means for actuating said carriage and said auf comprising' a carriage draw bar having a. lost motion connec. tion to said carriage and an operative connection to said jaw, a reciprocating actuating member, a combined friction and driv ing connection for said actuating member and draw bar lcomprising a clutch bar on said driving member having a hole therein, a friction shoe on said draw bar coacting with said clutch bar providing a friction drive connection, a driving pawl on said draw bar adapted to engage said hole in saidy clutch bar providing a positive drive connection7 a stop for holding said carriage on its forward stroke to permit engagement Vof' lsaid paw'l, means for retracting said stop timed with the engagement of said driving pafwl;` and a cam for disengaging said driving pawl on the return stroke of the carriage'.

5; in a structure of the class described, the

' combination of awork holder, a reciprocatends of the stroke of the carriage7 a reciproeating actuating memberT a driving connection' for said actuating member and draw bar comprising a friction shoe providing a friction drive and a pawl providing when engaged a positive drive; means for tempo-v rarily holding saidl carriage onits forward stroke to permit engagement of said pawl, means for disengagingsaid pawl during the return strokeo'f the carriage, and a carriage return stop positioned to engageV after said pawl has been disengaged.

' 6. In a structure ofthe class described, the combination a 'work holder7 a reciprocatingl'y mounted carriage pro-vided with a I fixed'jaw and a movable jaw, means for actuating said carriage and said jaw comprising a draw barv having 'a lost motion connection to said carriage and operatively conneafted to saidy pivotedl'jawso that the jaw is .opened and closed by the independent movement of' said draw bar at the ends ofthe stroke ofthe carriage, a reciprocating actuating member, a driving' connection for said actuating member' and draw bar comprising friction shoe providing a friction drive and a p'awlprovding when engaged a posi,- tive drive, lmeans for temporarily holding said carriage on its forward stroke to permit engagement of said pawh and means for disengaging said paw'l during the return stroke ofA the carriage.

7. In astructnre of the class described, the combination of a. workholder, a reciprocatingly mounted carriage provided with a fixed jaw and a` movable jaw, means for frictionally retarding the movement of said carriage, and means for actuating said carriageand saidjaw comprising a draw bar having a lost motion connection to said carriage and operatively connected to said pivoted so that the jaw` is opened and closed by the. independent movement of said draw bar at the ends o-f the stroke of the carriage. 'Si In astr'ucture of the class described` tastes@ the Combination Of a Work helder, a fsf/irre.- Catngly 11.10 work engaging aw, a brake for friction'ally retarding said carriage, means for4 actuating Said Carriage and iawcompl'sils a Carries@ draw bar having a lost motion connection to said carriage and an operative connection to jaw lwhereby the jaw' is opened and' closedv by the movement of said draw bar independent of the carriage@ a combined friction and positive driving connection for Said actuating member t@ Said draw bewereprising'a frictionshoe and apa-wl means for 'teinrerariy holding Said Carriage @e its forward stroke to permit the engagement of Said' parl, mme' for dseasaees Said pawl during the return stroke of the carfa-se, Garliase-1'leiurnst0r positioned to engage after the pawl diseneased- In a structnre of the class described, thel combination of awork holder,r a recipfocathely maimed 'carriage provided with a work engaging jaw, means for actuating' said carriage and jaw comprising a car `ge draw bar having a lost motion connection to Said Carries@ and an( Operative Comedian to said jaw whereby the jaw isv opened closed by the movement of said draw bar independent of the carriage, a combined friction and positive driving connection for said actuating member to said draw bar comprising a friction shoe and a pawl means for temporarily holding said carriage on its forward stroke to permit the engagement of said piawl, and means for disengaging said pawl during the return stroke of the carriage.

l0. In a structure ofthe class described, the combination of a work holder, a reciprocatingly mounted carriage provided with work engaging jaws, mea-ns for frictiona-lly retarding the movement of said carriage, means for actuating said carriage including a friction and a positive driving means, and means for controlling said positive driving means whereby it is engaged and disengaged at point intermediate the stroke of the carriage said driving means having a lost mo- 'tion connection to said carriage and being operatively connected to said jaw whereby the jaws are actuated to engage and release the work.

l1.. In a structure of the class described, the combination of a work holder, a reciprocatingly mounted carriage provided with work engaging jaws, means for actuat i said carriage including a friction and a posh tive driving means, and means for controlling said positive driving means whereby it is engaged and disengaged at a point intermediate the stroke of the carriage.

i2. In a structure of theclass described, the combination of a work table provided with a pin-like upright Work holder-adapted ted carriage provided with a.

to receive a coiled spring, said work holder being provided with a stop shoulder adapted to coact with the end of the bottom coil of a spring, said table and work holder being notched to permit the entrance of a work engaging jaw below the bottom coil of the spring, a reciprocating carriage provided with a. forwardly facing fixed jaw, a coacting upwardly facing hooked jaw, means for adjustably supporting said hooked comprising a lever pivotally mountedA on said carriage and having said hooked jaw pivotally mounted thereon,y a link engaging said hooked jaw in front of its pivot, a supporting spring for said link, and a jaw actuating member having a lost motion connection to said carriage and a link connection to said lever.

13. In a structure of the class described, the combination of a work holder adapted to receive a coiled spring, a reciprocating carriage provided with a forwardlyv facing fixed jaw, a coacting upwardly facing hooked jaw, means for supporting said hooked jaw comprising a lever pivotally mounted on said carriage and having said hooked jaw pivotally mounted thereon, a link engaging said hooked jaw in front of its pivot, a supporting spring for said link,

Vand a jaw actuating member having a lost motion connection to said carriage and a link connection to said lever.

14. In a structure of the class described, the combination of a pin-like work holder adapted to receive a coiled spring and provided with a work positioning stop with which the end of the bottom coil of the spring may be engaged, a reciprocating carriage provided with work engaging jaws adapted to engage the bottom coil of the spring adjacent its end, means for reciproeating said carriage and automatically opening and closing said jaws to engage and release the work, a straightening pin disposed in spaced relation to said work holder and so that the wire is drawn against the same as it is uncoiled, and means for lifting the work from the jaws arranged to engage the uncoiled end thereof.

15. In a structure of the class described, the combination of a pin-like work holder adapted to receive a coiled spring and provided with a work positioning stop with which the end of the bottom coil of the spring may be engaged, a reciprocating carriage! provided with work engaging jaws adapted to engage the bottom coil of the spring adjacent its end, means for reciprocating said carriage and automatically opening and closing said jaws to engage and release the work, and a straightening pin disposed in spaced relation to said work holder and so that the wire is drawn against the same as it is uncoiled.

16. In a structure of the class described,

the combination of a pin-like work holder adapted to receive a coiled spring and provided with a work positioning stop with which the end of the bottom coil of the spring may be engaged, a reciprocating carriage provided with work engaging jaws adapted to engage the bottom coil of the spring adjacent its end, means for reciprocating said carriage and automatically opening and closing said aws to engage and release the work, and means for lifting the work from the jaws arranged to engage the uncoiled end thereof.

17. In a structure of the class described, the combination of a pin-like work holder adapted to receive a coiled spring and provided with a work positioning stop with which the end of the bottom coil of the spring may be engaged, a reciprocating carriage provided with work engaging jaws adapted to engage the bottom coil of the spring adjacent its end, and means for reciprocating said carriage and automatically opening and closing said jaws to engage and release the work. Y

18. In a structure of the class described, the combination of a work holder adapted to rotatably support a coiled spring, a re ciprocating carriage provided with work engaging jaws adapted to engage the bottom coil of a spring supported on said work holder, means for reciprocating said carriage and automatically opening and closing said jaws to engage and release the work,- a straightening pin disposed in spaced relation to said work holder and so that the wire is drawn against the same as it is uncoiled, and means for lifting the work from the jaws arranged to engage the uncoiled end thereof.

19. In structure of the class described,

the combination of a work holder adapted to rotatably support a coiled spring, a reciprocating carriage provided with work` engaging jaws adapted to engage the bottom coil of a spring supported on said work holder, means for reciprocating said carriage and automatically opening and closing said jaws to engage and release the work, and a straightening pin disposed in spaced relation to said work holder and so that the wire is drawn against the same as it is uncoiled.

20. In a structure of the class described, the combination of a work holder adapted to rotatably support a coiled spring, a reciprocating carriage provided with work engaging jaws adapted to engage the bottom coil of a spring` supported on said work holder, means for reciprocating said car-A riage and automatically opening and closing said jaws to engage and release the work, and a straightening pin disposed in spaced relation to said work holderfand so that the wire is drawn against the same as it is unably supported.

2l. In a structure of the class described,

the combination of a work holder adapted` to rotatably support a coiled spring, a reciprocating carriage provided with work engaging aws adapted to engage the bottom coil of a spring supported on said work holder, and means Afor reciprocating said carriage and automatically opening and closing said liaws to engage and release the. work.

22. In ra structure of the class described, the combination of a rotatably mounted work table provided with a plurality of upright pin-like work holders adapted to receive coiled springs, means for actuating said table with a step by step movement, 'a

gripper carriage reciprocating radially of said "table and adapted to grip the bottom coil of a spring on' said work holder, and a straightening pin across which the uncoiled wire is drawn on the retracting movement of the gripper carriage.

23. In a structure of the class described, the combination ofV a rotatably mounted work table providedv with a plurality of upright pin-like work holders adapted to receiveA coiled springs, means for actuating said table with a step by step movement, and a gripper carriage reciprocating radially of said table and adapted to grip the bottom coil of a spring on said work holder.

24. In a structure of the class described,

'the combination of a rotatable work table,

means fordriving said table with a step by step movement, a plurality of uniformly spaced work and. adapted to receive and support coiled springs in an upright position, a reciproeating gripper carriage adapted to engage the bottom coil of the spring whereby the spring is partially uncoiled on the retracting movement of the carriage, a yieldingly mounted plate adapted to engage the upper endy of the spring, when in operative relation to said carriage., and ,means for disengaging the work from the gripper adapted to lift thev work against the said yielding plate.

25. In. a structure of the class described, the combination of a rotatable work table, mean-s, for driving said table with'a step by step movement, a plurality of uniformly spaced work holders mounted on said table and adapted to receive and support coiled springs in an upright position, a reciprocatingv gripper carriageadapted to engage the bottom coil of the spring whereby the spring Y is partially uncoiled on the re racting movement of thel carriage, and a yieldingly mounted plate adapted to engage the upper end of the spring when in operative relation to said carriage.

26. In ar structureoi1 the class described, the combination of a rotatably mounted holders mounted on said table tratase carriage reciprocating radially of said table l and adapted to grip the bottom coils oi the springs, a straightening pin across which the uncoiled wire is drawn onrthe retracting movement oi the gripper, an ejector for releasing the work from the gripper, a cutter, a work positioning lever adapted to engage the work as the table is rotated to swing the uncoiled end thereof inwardly,y a` work positioning shoe disposed at the rear of said lever to engage the work" and rotate. the same upon the work holders delivering the uncoiled ends thereoto the cutter, and means for actuating ,said table, gripper carriage and cutter in synchronism.

27. In a structure oi the class described, the combination of a rotatably mounted work table provided with a plurality of upright Vpin-like work holders adapted to rotatably support coiled springs, a gripper carriage reciprocating radially of said table and adapted to grip the bottom coils of the springs, a cutter, a work positioning lever adapted to engage the work as the table rotated to swing the uncoiled end thereof inwardly, a work positioning shoe disposed at the rear of said lever to engage the work and rotate the same upon the work holders delivering the uncoiled ends thereofY tol the cutter, and means for actuating said table, gripper carriage and cutter in synchronism.

28.' In a structure ot the class described, the combination of a rotatably 'mounted work table provided with a. plurality of'upright work holders adapted to rotatably support coiled' springs, a gripper carriage reciprocating radially of said table, and adapted to grip the bottom coils of the springs supported on said work holder, a`

cutter, a work positioning lever adapted to engage the work as the table is rotated to swing the uncoiled end thereof'inwardly, a work positioning shoe disposed at the rear of said lever toengage the work and rotate the same upon the work holders deliveringy the uncoiled ends thereof to the cutter, and means for. actuating said table, gripper carriage and cutter in synchronism.

29.l In a structure of the class described, the combination of a rotatably mounted work table provided with a plurality of upright work holders adapted to rotatably support coiled springs, a gripper. carriage reciprocating radially of said table and adapted to grip the bottomr coils` o' the, springs supported on said work holder, a cutter, a work positioning shoe disposed to engage the work and rotate the same upon the` work holders delivering the uncoiled ends thereof to the cutter, and means for actuating said table, gripper carriageand cutter in synchronism.v

30. ln a structure ot the class described, the combination of a rotatably mounted work table provided with a plurality of upright work holders adapted to rotatably support coiled springs, a reciprocating gripper carriage adapted to grip the bottom coils otl the springs on said work holders, and a work positioning' lever adapted to engage the work as the table is rotated to swing the uncoiled end thereof inwardly.

3l. ln a structure of the class described, the combination of a rotatably 'mounted work table provided with a plurality of upright pin-like work holders adapted to receive coiled springs, means for actuating said table with a step by step movement, a work gripper carriage reciprocating radially of said table and adapted to grip the bottom coils adjacent their ends, a straightening pin across which the uncoiled wire is drawn on the retracting movement of the gripper, an ejector for releasing the work from the gripper, a cutter, means for rotating the work upon the work holder as lthe table is rotated to swing the uncoiled end thereof into the cutter, and means for actuating said table, gripper carriage and cutter in synchronism.

32. ln a structure ot the class described, the combination of a rotatably mounted work table provided with al plurality of upright pin-like work holders adapted to receive coiled springs, means 'for actuating said table with a step by step movement, a. work gripper carriage reciprocating radially of said table and adapted to grip the bottom coils adjacent their ends, a cutter, means 'for rotating the work upon the work holder the table is rotated to swing the uncoiled end thereof into the cutter, and means for actuating said table, gripper carriage and cutter in synchronism.

ln a structure of the class described, the combination oit a rotatable work table, means 'lor driving said table with a step by step movement, a plurality ot uniformly spaced work holders mounted on said tableI and adapted to rotatably support coiled springs in an upright position, a reciprocating gripper carriage adapted to engage the bottom coils ot' the springs whereby they are partially uncoiled on the retracting movement of the carriage, a cutter, means actuated by the rotation of the table for positioning the work relative to said cutter, and means for actuating said -cutter while the table is at rest.

34. In a structure of the class described, the combination of a rotatable work table, means for driving said table with a step by step movement, a plurality of work holders mounted on said table and adapted to rotatably support coiled springs in upright position, a reciprocating gripper carriage adapted to engage the bottom coils of the springs whereby they are partially uncoiled on the retracting movement of the carriage, a cutter supported for adjustment radially of said table, means for rotating the springs upon their holders to swing the uncoiled ends thereof into said cutter, and means 'for actuating said table, carriage and cutter in synchronism.

35. In a structure of the class described, the combination of a rotatable work holder, means for driving said table with a step by step movement, a plurality of work holders mounted on said table and adapted to rotatably support coiled springs, a reciprocating gripper carriage adapted to engage end coils 'of the springs whereby they are partially uncoiled on the retracting movement of the carriage, and means for actuating said table and carriage in synchronism.

36. In a structure of the class described, t-he combination of al rotatable work table, means for driving said work table with a step by step movement, Work holders mounted on said table and adapted to rotatably support coiled springs in an upright position, a reciprocating gripper carriage adapted to successively engage the bottom coils of the springs whereby they are partially uncoiled on the retracting movement of the carriage, a cutter, means actuated by the rotation of the table for positioning the uncoiled ends of the springs in operative relation to the cutter, and a rotating brush positioned to engage the springs when advanced from said cutter ejecting the same from said holder.

37. In a structure of the class described,

the combination of a rotatable work table, means for driving said work table with a step by step movement, work holders mounted on said table and adapted to rotatably support coiled springs, a reciprocating gripper carriage adapted to successively engage end coils oit the springs 'whereby they are partially uncoiled on the retiacting` movement ot' the carriage, a cutter, vand means actuated by the rotation of the table for positioning the uncoiled ends of the springs in operative relation to the cutter.

38. In a structure of the class described, the combination of a rotatable work table, means for driving said work table with a step by step movement, work holders mounted on said table and adapted to rotatably support coiled springs, a reciprocating gripper carriage havingautomatically acting gripping jaws adapted to successively engage end coils of the springs whereby they are partially uncoiled on the retraeting movement of the carriage and means for actuating said table and carriage in synchronism.

39. In a structure of the class described,

the combination of a Work holder adapted to rotatably support coiled springs, a reciprocating carriage having automatically acting gripping jaws adapted to engage an end coil of la spring mounted on said holder on the forward movement of the carriage whereby the Spring is partially uncoiled on the ietracting movement of the carriage7 and means for automatically releasing said gripping Jaws.

In Witness whereof, I have hereunto Set my hand.

BERT L. VAN ORMAN. [La] K

Images